Concealed hinge.



0. B'. PARSONS.. 'oww-Emp Hmms.

APPLICATION/,FILED' luLY13.1911.'

1,2%?1204. Patented Aug., 20, 1918.

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me/Mofa CARL B. PARSONS, 0F DETROIT, MICHIGAN.

concnennn HINGE.

Specification of Letters Patent.

Patented Aug. 20, i918.

Application led July 13, 1917. Serial No. 180,310.

TQ aZZ, whom may concern.' 4

Be it known that I, CARL B. PARSONS, a citizen of the United States,residing Detroit, county of Vllayne, Stateof Michigan, havel invented acertain new and useful Improvement in Concealed Hinges, and declare thefollowing to be a full, clear, and eXact 4description of the same, suchas will enable others skilled in the art to which it pertains to makeand use the same, reference being had to the accompanying drawings,wh1ch form a part 0f this specification.

This invention relates to concealed hinges and has for its-object aconcealed hinge of very simple and cheap construction, yet :ef fectiveto accomplish the purpose for whlch it was designed.

In the drawings- Figure 1 is a cross section of the hinge attached tothe door post.

Fig. 2 is a similar view showing the hinge in the opera-tion of opening.

Fig. 3 is a vertical section through the door post showing the hinge inelevation.

Fig. 4 is a rear elevation showing how the parts are disassembled.

The hinge comprises the curved arm a which is of reduced width towardthe pin end. This reduced width of the arm allows the lifting of the pin(as shown in Figs. 3 and 4) out of its hole in the rearwardly Yprojecting web Z). This web is an integral part of the plate c which isscrewed to the door post. The way this is assembled is shown in Figs. 8and 4.

The customary way of making concealed hinges has been to have the usualplate that screws to the door post and then havea pincarrying plate thatscrews to the first mentioned plate that allows the disassembly of thehinge by taking out this pin-carrying plate and the hinge arm.

It will be seen from the above description that I accomplish the sameresult by simply using a flat plate that has only the rearwardlyprojecting web b to carry the pin and that the `pin and arm may bedisengaged from the same by simply swinging the door open and liftingthe pin out.

One of the features of this hinge is the forming of the plate with thecurved outside surface c', whose contour 1s in. conformity with thecurvature of the body. This does away with the necessity of filing ofi'the edge of the hinge to conform to the body lines.

What I claim is:

In a concealed hinge, the combination of a plate having a slot therein,a rearwardly projecting web extending from one edge of said slot and'provided with a socket, a hinged arm having a reduced outer portion andthe rest of said arm being of a dimen? sion to fill said slot, said armhaving a pin extending therefrom adapted to engage in the socket in saidweb, theV parts being so arranged that when the hinge is turned to itsopen position the reduced portion of said arm shall be within said slotto permit of the passage of the pin therethrough and in the otherpositions, said arm shall engage the edge of said slot to prevent thedisengagement of said pin. v

In testimony whereof, I sign this specication.

CARL B. PARSONS.

